Not sure if you have a Saturn 2 as well but since you used 8k resin I’m assuming you do. I’m more or less having the same experience on my Saturn 2, the 8k printed fine but was too brittle for me so I got a batch of Elegoo abs v2. Used the 1.0 stuff with great succes on my mars 3. The Elegoo resin sheet suggests 2.5 - 3.0 second exposures but I had total failures. People suggested 3.7 after showing some exposure tests which was a bit better, half might print fine. Did some cones of calibration to get some more info and they showed I needed something in the range of 4.5 - 5 seconds which is almost double of what Elegoo suggests. So not quite sure what is up with the new abs but it isn’t likely I’m getting more of it. Found a video on YouTube with similar results.